air pollution in china
China smog sparks red alerts in 10 cities
Hazardous smog blanketing China's north-east sparks more red alerts, with authorities advising residents in 10 cities to stay indoors.
Beijing issues second ever pollution "red alert"
Beijing authorities have issued a second pollution "red alert", little more than a week after its first ever such warning.
Beijing pollution: Schools keep children indoors
Schools in the Chinese capital Beijing are ordered to keep children indoors amid extremely high levels of air pollution.
China smog sparks red alerts in 10 cities
Hazardous smog blanketing China's north-east sparks more red alerts, with authorities advising residents in 10 cities to stay indoors.
Beijing issues second ever pollution "red alert"
Beijing authorities have issued a second pollution "red alert", little more than a week after its first ever such warning.
Beijing pollution: Schools keep children indoors
Schools in the Chinese capital Beijing are ordered to keep children indoors amid extremely high levels of air pollution.